利用声波重构反演方法预测红台地区储层  

Application of Acoustic-wave Reconfiguration Inversion Method for Predicting Seismic Reservoirs in Hongtai Area

作　　者：谢锐杰[1] 王健[2] 段天友[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [2]中石油吐哈油田分公司开发部,新疆哈密839009

出　　处：《石油天然气学报》2012年第9期93-96,7,共4页Journal of Oil and Gas Technology

摘　　要：红台地区中侏罗统三间房组储层主要为三角洲前缘沉积,砂体分布不均匀,且钻井密度较低,因此,必须更多地利用地震资料预测储层。波阻抗反演的目的是将界面型地震资料转换成岩层型资料,由于岩石速度和密度受多因素影响,用纵波阻抗值区分岩性一直是反演工作的难点,声波曲线重构就是为了解决该难点而引入的一种技术。声波曲线重构就是利用反映地层和岩性变化比较敏感的自然伽马等测井曲线构建具有声波量纲的新曲线,结合声波的低频模型,合成拟声波曲线,使它既能反映地层速度和波阻抗的变化,又能反映岩性的细微差异。应用该方法在红台地区识别有利储层,取得了较好的应用效果。The reservoir in Sanjianfang Formation of Middle Jurassic of Hongtai Area was the front-delta deposition,the distribution of sand body was uneven,and the well drilling density wasvery low,therefore more seismic data should be used to predict reservoirs.The goal of wave impedance inversion was to invert the interface seismic data into the rock stratum data.For multi-factor influence of the rock velocity and density,using longitudinal wave impedance number to distinguish the lithology was difficult for inversion.To solve the problem,a acoustic wave curve reconfiguration technology was introduced,by using more sensitive GR logging curve which reflected the change of the strata and lithology to construct AC dimension new curve,in combination with the low-frequency model of AC,synthetic pseudo-acoustic curve,it not only reflected the strata velocity and wave impedance,but also reflected the lithology nuances.The method is used for reservoir recognition in Hongtai Area and better effect is obtained.

关 键 词：声波重构 波阻抗反演 红台地区 

分 类 号：P631.44[天文地球—地质矿产勘探]